The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 2006
Filed:
May. 15, 2000
Kimihiko Imamura, Chiba, JP;
Yoshiteru Matsushita, Chiba, JP;
Hidekazu Tsuboi, Chiba, JP;
Takashi Yoshimoto, Chiba, JP;
Kimihiko Imamura, Chiba, JP;
Yoshiteru Matsushita, Chiba, JP;
Hidekazu Tsuboi, Chiba, JP;
Takashi Yoshimoto, Chiba, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An OFDM receiver includes an offset compensator () compensating for a frequency offset in a received OFDM signal. The offset compensator () includes a memory () storing two reference signals corresponding to arbitrary portions in the start symbol of the OFDM signal. A cross correlation value between the received OFDM signal and each of the two reference signals is calculated by a cross correlator (). Each peak position is detected by a peak detector (). A frequency offset estimate value of the received OFDM signal is estimated by a frequency offset estimation circuit () based on the cross correlation value at each detected peak position. A phase rotation circuit () compensates for the frequency offset of the received OFDM signal based on the estimated frequency offset estimate value.